Ultimate strength performance of bulk carriers with various corrosion additions

Kim, D.K.; Kim, S.J.; Kim, H.B.; Zhang, X.M.; Li, C.G.; Paik, Jeom Kee

doi:10.1080/17445302.2014.904033

Cited by 5 publications

(3 citation statements)

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“…Thus, taking into account the ultimate strength and post-collapse behavior of individual structural members is essential to determine the overall integrity of a structural system. There has been significant effort to assess the strength capacity of steel marine structures with uniform corrosion [39,40] and localized corrosion damage using both experimental and finite element (FE) methods [34,41], varying structural geometries, corrosion extent, loading/boundary conditions and structural initial imperfections. While the influence of pitting corrosion has been investigated in depth over the last decade [42][43][44][45][46], grooving corrosion has gained increasing attention only recently [47][48][49].…”

Section: Introductionmentioning

confidence: 99%

Mechano-electrochemical modelling of corroded steel structures

Wang

Wharton

Shenoi

2016

Engineering Structures

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A numerical methodology is established to study the mechanoelectrochemical performance of corroded steel structures under external and internal stresses. Results show that mechanical stimuli (elastic/plastic deformation) increase the local anodic current density, and thus the corrosion behavior dynamically responds to the loading conditions. The current density increment for a multi-component stress system is largely dependent on both hydrostatic pressure and equivalent plastic strain. Moreover, the mechano-electrochemical corrosion is more affected by plastic deformation, resulting in localized areas being more anodic. Existing corrosion introduces extra stress/strain concentration, which further reduces the structural strength capacity and intensifies the corrosion damage. ABSTRACTA numerical methodology is established to study the mechano-electrochemical performance of corroded steel structures under external and internal stresses. Results show that mechanical stimuli (elastic/plastic deformation) increase the local anodic current density, and thus the corrosion behavior dynamically responds to the loading conditions. The current density increment for a multi-component stress system is largely dependent on both hydrostatic pressure and equivalent plastic strain. Moreover, the mechanoelectrochemical corrosion is more affected by plastic deformation, resulting in localized areas being more anodic. Existing corrosion introduces extra stress/strain concentration, which further reduces the structural strength capacity and intensifies the mechano-chemical corrosion damage.

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Section: Introductionmentioning

confidence: 99%

Mechano-electrochemical modelling of corroded steel structures

Wang

Wharton

Shenoi

2016

Engineering Structures

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“…Researches about the corrosion effect on the ships and jacket structures were already conducted by some of the researchers mentioned earlier. Ultimate strength analysis for bulk carriers with various corrosion additions was conducted by Kim et al (2014). A corrosion wastage model considering time-variant using Weibull distribution for subsea gas pipelines was designed by Mohd et al (2013).…”

Section: Introductionmentioning

confidence: 99%

Reassessment of the jacket structure due to uniform corrosion damage

Bai

Kim

Yan

et al. 2015

Ships and Offshore Structures

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A number of offshore platforms operating in the years were built with the outdated criteria. A reassessment analysis of the structures should be conducted for safety and maintenance. Reassessment of a jacket structure subjected to corrosion damages was analysed in this study. Programme SACS was used for modelling and conducting pushover analysis for the jacket structure. There are two types of corrosion damage, 'general corrosion' and 'localised corrosion', and the general corrosion was applied on the structure. Corrosion rates of the jacket structure could be divided into three parts, atmospheric zone, splash zone and full immersion zone. Through the pushover analyses using SACS, the relation between time and RSR/RSR 0 was established and it was verified which zone had more corrosion influence to the jacket structure.

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“…As the structural dimension increases, corrosion is simplified as a uniform thickness reduction with 2D shell elements or even 1D beam elements used in FEA models in order to justify the computational cost. In such cases, corrosion is simplified as a uniform thickness reduction [21,22], with only one set of box girder experiments published in the open literature by Saad-Eldeen et al [22][23][24]. Semi-analytical approaches including the Smith method, compartment progressive collapse method and Idealized Structural Unit method are preferable options for fast estimation of the structural ultimate strength [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Prognosis: Maritime Structural Performances in Service Environments

Wang

Downes

Wharton

et al. 2017

Volume 9: Offshore Geotechnics; Torgeir Moan Honoring Symposium

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For marine platforms, assessing the structural resilience in a corroded condition is vital for both design and maintenance practices. With the development of computational and experimental methods for structural analysis, the accuracy of the structural response prediction relies on a better understanding of the material degradation process. However, a realistic estimate of corrosion is inherently a complex undertaking. Corrosion of even a single form can often involve multiple stages, each of which has different steps across several geometric scales; corrosion systems are often multi-layered and involve geometric complexities; the mechanical factors (stress/strain distributions) could affect the corrosion initiation and kinetics. These complexities have resulted in scientific barriers to the advancement of a corrosion prognosis that forecasts damage accumulation, as well as a computational realization of the corrosion-structural analysis. This paper reviews the numerical and experimental work that the authors have done, including the development of nonlinear finite element models to assess the behavior of damaged steel ship structures, full-field experimental verifications, application of the mechanoelectrochemical theory and in situ tensile-corrosion tests. It is intended that the outcome of this research will be the establishment of a systematic multi-scale multi-physics experimental and numerical protocol for predicting aged structural resilience.

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Ultimate strength performance of bulk carriers with various corrosion additions

Cited by 5 publications

References 0 publications

Mechano-electrochemical modelling of corroded steel structures

Mechano-electrochemical modelling of corroded steel structures

Reassessment of the jacket structure due to uniform corrosion damage

Corrosion Prognosis: Maritime Structural Performances in Service Environments

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